// 引入Count组件
// import CountUI from "../../components/Count"
import {increment, decrement, incrementAsync} from "../../redux/actions/count"

// 引入connect用于连接UI组件与redux
import {connect} from "react-redux"

import React, { Component } from 'react'

class CountUI extends Component {

  // 加法
  increment = () => {
    const {value} = this.selectNumber
    this.props.increment(value * 1)
  }

  // 减法
  decrement = () => {
    const {value} = this.selectNumber
    this.props.decrement(value * 1)
  }

  // 奇数再加
  incrementIfOdd = () => {
    const {value} = this.selectNumber
    if(this.props.count % 2 !== 0) {
      this.props.increment(value * 1)
    }
  }

  // 异步加
  incrementAsync = () => {
    const {value} = this.selectNumber
    this.props.incrementAsync(value * 1, 500)
  }

  render() {
    return (
      <div>
        <h2>我是Count组件，下方组件总人数为：{this.props.personCount}</h2>
        <h4>当前求和为：{this.props.count}</h4>
        <select ref={c => this.selectNumber = c}>
          <option value="1">1</option>
          <option value="2">2</option>
          <option value="3">3</option>
        </select>&nbsp;
        <button onClick={this.increment}>+</button>&nbsp;
        <button onClick={this.decrement}>-</button>&nbsp;
        <button onClick={this.incrementIfOdd}>当前求和为奇数再加</button>&nbsp;
        <button onClick={this.incrementAsync}>异步加</button>&nbsp;
      </div>
    )
  }
}


/* // 映射状态
const mapStateToProps = state => ({count: state})

// 映射操作状态的方法
const mapDispatchToProps = dispatch => (
  {
    increment: number => dispatch(increment(number)),
    decrement: number => dispatch(decrement(number)),
    incrementAsync: (number, time) => dispatch(incrementAsync(number, time))
  }
)

// 使用connect()()创建并暴露一个Count的容器组件
export default connect(mapStateToProps, mapDispatchToProps)(CountUI) */


// 使用connect()()创建并暴露一个Count的容器组件
export default connect(
  state => ({
    count: state.count,
    personCount: state.person.length
  }),
  {
    increment,
    decrement,
    incrementAsync
  }
)(CountUI)
